Salzartige Verbindungen und intermetallische Phasen des Natriums in flüssigem Ammoniak

Organic Cation and Complex Cation‐Stabilized (Poly‐)Selenides, [Cation]x(Sey)z: Diversity in Structures and Properties

“…[65] Much effort has been put into the understanding of the multifaceted species that exist in solution.…”

Bildung eines homoatomaren, polycyclischen Bismut‐Polyanions, [Bi11]3−, durch Pyridin‐unterstützte Zersetzung von [GaBi3]2−

“…[9,[13][14][15][16] -Familie, [17] gelang es doch in den meisten Fällen, die Spezies für alle Elemente der betreffenden Hauptgruppe zu isolieren und in vielfältigen Folgeuntersuchungen, etwa den oben erwähnten, [9] zu studieren. " zugeordnet) [19] bis zur Stabilisierung von im freien Zustand unbekannten Spezies durch Metallcarbonyle oder interstitielle Übergangsmetallatome. [20] Mithilfe der Titelverbindung kann diese Debatte nun beendet werden -zumindest bei Anwendung der oben genannten, hçchst ungewçhnlichen Synthesemethode.…”

Syntheses and Crystal Structures of Four New Ammoniates with Heptaarsenide (As$\rm{_{7}^{3-}}$) Anions

“…Nevertheless, a number of different molecular anions have been reported so far. In the 1930s, Zintl and co-workers published electrochemical studies of Na/As alloys, where the compound Na 3 As 7 was mentioned [1]. Ba 3 As 14 was the first compound containing a heptaarsenide (As anion investigated by single-crystal X-ray crystallography [2].…”

“…88 (2005) The Rb cations are mainly attached to the two-bonded As-atoms of the cage, where the negative charges are formally located. The corresponding RbÀAs distances range from 3.5084(6) to 3.6278(6) ; the contacts to As (7) and As(6) at the triangular base of the anion, with 3.7088(7) and 3.7175(6) , respectively, are additionally included into the coordination sphere of Rb (1). All the other RbÀAs distances are significantly larger (the next distance, Rb(3)ÀAs(5), amounts to 3.9349 (7) ).…”

“…Unfortunately, the NH 3 H-atoms could not be located for N (2) and N(6). However, due to the short distances to either O(6) (3.260 (7)) and O(18) (3.375 (7) ), or N(4)#2 (3.30 (1)) and N(7) (3.37 (1) ), H-bonding between these atoms is very probable, since these distances agree well with those found for the other six NH 3 molecules (average N´´´O and N´´´N distances of 3.35 and 3.41 , resp. ; see Fig.…”